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USGS is a primary source of geographic information system (GIS) data. Our data and information is presented in spatial and geographic formats, including The National Map, Earth Explorer, GloVIS, LandsatLook, and much more. Explore GIS Data Maps. 

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Geology of anthracite in the western part of the Ashland quadrangle, Pennsylvania Geology of anthracite in the western part of the Ashland quadrangle, Pennsylvania

The Western Middle anthracite field is one of four structural basins containing anthracite in eastern Pennsylvania. This report describes the geology of the part of the Western Middle field that lies in the western half of the Ashland quadrangle. (See index map, sheet 2.) The mapped area covers about 19 square miles in Columbia and Schuylkill Counties. The town of Centralia is in the...
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